Metro will perform major track work over the weekend of January 20-22 on

all five rail lines. The work will begin at 10 p.m. Friday and continuethrough system closing on Sunday.

Here is information about how each line is affected:

Red Line

Crews will continue to advance NTSB-recommended track circuitreplacement, a key step toward restoring automatic train operations.This weekend's work will take place between Bethesda and Grosvenor, withbuses replacing trains between those two stations. In addition, MedicalCenter Station will be closed, with alternate shuttle service provided.

●Beginning at 10 p.m. Friday and continuing through system closing onSunday, shuttle buses will replace Red Line trains between Bethesda andGrosvenor.

●Red Line trains will operate at normal weekend intervals in twosections: between Shady Grove and Grosvenor and between Bethesda andGlenmont.

●Medical Center station will be closed.

●On Friday night, the last Glenmont-bound Red Line train to operatebefore work begins will depart Shady Grove at 9:43 p.m. and departBethesda at 10 p.m. The last Shady Grove-bound train will departGlenmont at 9:05 p.m. and Bethesda at 9:50 p.m.

●The last Red Line train from Shady Grove will depart 15 minutesearlier than usual -- at 2:15 a.m. on Friday and Saturday nights (earlySaturday and Sunday), and at 11:15 p.m. on Sunday night.

●Customers traveling through the work zone should allow about 20minutes of additional travel time.

Orange Line

●Trains will single track between East Falls Church and West FallsChurch for testing of the Dulles rail project, and betweenStadium-Armory and Cheverly for platform rehabilitation.

●Orange Line trains will depart Vienna and New Carrollton every 24minutes. Service will be coordinated with the Blue Line to provideservice every 12 minutes at stations from Rosslyn to Stadium-Armory.Additional trains will be operated based on ridership and availabletrack space.

Blue Line

●Trains will single track between Braddock Road and Van Dorn Streetfor rail rehabilitation.

●Blue Line trains will depart Franconia-Springfield and Largo TownCenter every 24 minutes. Service will be coordinated with the OrangeLine to provide service every 12 minutes at stations from Rosslyn toStadium-Armory. Additional trains will be operated based on ridershipand available track space.

Green Line

●Trains will single track between Naylor Road and Branch Avenue forrail renewal.

●Green Line trains will depart endpoint every 24 minutes. Additionaltrains will be operated based on ridership and available track space.

Yellow Line

●Trains will single track between Braddock Road and Huntington forrail rehabilitation.

●Yellow Line trains will operate between Huntington and Mt. VernonSquare every every 24 minutes. Additional trains will be operated basedon ridership and available track space. Customers traveling to/fromstations north of Mt. Vernon Square should use Green Line trains tocomplete their trip.

The Trip Planner on Metro’s website will not reflect the impact ofthis work on schedules. For more information on traveling by Metrobus orMetrorail, customers may call 202-637-7000 or TTY 202-638-3780, or visitwmata.com.